Passing Parameters from Dashboard to a JSP page

Hi,
I have a table column of values displayed in dashboard. when a user clicks a value, that value should be send as a parameter to a JSP Page.
Tell me how to add that column value as a parameter to the url which navigates to the JSP page. Should i use some presentation variables?
If so give me the steps...
Thanks,

Hi Venkat,
I am really happy to see your reply. i will explain my doubt clearly.
I am using a presentation variable to store the column value selected by user(using a prompt). And i am using a Link (Dash board link ) to navigate to a jsp page.
I want the presentation variable's value should be accessed in the JSP page...
Now is it possible to pass the presentation variable's value through the url of the link to a jsp page.
Eg: Let Presentation variable is file, and i had given the Link's url as
http://localhost:9704/servco.jsp?file_id=@{file}
i dont know whether this is the correct way. Please help me out in this....

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